:root {
  --bg: #0d0d10;
  --bg2: #16161c;
  --card: #1c1c24;
  --card2: #22222c;
  --border: #2c2c38;
  --txt: #f2f2f5;
  --muted: #8a8a99;
  --orange: #ff6a00;
  --orange2: #ff8c33;
  --brl: #ff6a00;
  --usd: #2ecc71;
  --br: #ffb020;
  --us: #4a90ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--txt);
  min-height: 100vh;
}

.logo { font-weight: 800; letter-spacing: -0.5px; font-size: 20px; }
.logo span { color: var(--orange); }

/* ---------- Login ---------- */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at 30% 20%, #241405 0%, var(--bg) 55%);
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  width: 340px;
  display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.login-card .logo { font-size: 28px; text-align: center; }
.login-card h1 { font-size: 15px; font-weight: 500; color: var(--muted); text-align: center; margin-bottom: 6px; }
.login-card input {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; color: var(--txt); font-size: 15px;
}
.login-card input:focus { outline: none; border-color: var(--orange); }
.login-card button, button[type=submit] {
  background: linear-gradient(135deg, var(--orange), var(--orange2));
  color: #111; font-weight: 700; border: none; border-radius: 10px;
  padding: 12px; font-size: 15px; cursor: pointer;
}
.login-card button:hover { filter: brightness(1.08); }
.erro { color: #ff5555; font-size: 13px; text-align: center; min-height: 16px; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; background: var(--bg2); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.btn-ghost {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); }

.wrap { max-width: 1100px; margin: 0 auto; padding: 24px; }

/* ---------- Periodos ---------- */
.periodos { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
.chip {
  background: var(--card); border: 1px solid var(--border); color: var(--muted);
  padding: 8px 16px; border-radius: 20px; cursor: pointer; font-size: 14px; font-weight: 500;
}
.chip:hover { border-color: var(--orange); color: var(--txt); }
.chip.ativo { background: var(--orange); border-color: var(--orange); color: #111; font-weight: 700; }
.custom { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.custom input[type=date] {
  background: var(--card); border: 1px solid var(--border); color: var(--txt);
  border-radius: 8px; padding: 7px 10px; font-size: 13px; color-scheme: dark;
}
.custom span { color: var(--muted); font-size: 13px; }
#aplicarCustom { padding: 8px 14px; }
.periodo-label { color: var(--muted); font-size: 13px; margin: 4px 0 18px; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; display: flex; flex-direction: column; gap: 6px;
}
.card-label { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .5px; }
.card-valor { font-size: 30px; font-weight: 800; }
.card-sub { color: var(--muted); font-size: 13px; }
.destaque-brl { border-color: rgba(255,106,0,.4); }
.destaque-brl .card-valor { color: var(--orange); }
.destaque-usd { border-color: rgba(46,204,113,.4); }
.destaque-usd .card-valor { color: var(--usd); }

/* ---------- Split BR / US ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.split-box { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.split-box.br { border-left: 3px solid var(--br); }
.split-box.us { border-left: 3px solid var(--us); }
.split-head { font-weight: 700; margin-bottom: 12px; font-size: 15px; }
.split-row { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 15px; }
.split-row:last-child { border-bottom: none; }
.split-row span { color: var(--muted); }
.split-row.muted b { color: var(--muted); font-weight: 600; }

/* ---------- Grafico ---------- */
.grafico-box, .tabela-box { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; margin-bottom: 16px; }
.grafico-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-weight: 600; }
.legenda { font-size: 12px; color: var(--muted); display: flex; gap: 12px; align-items: center; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; vertical-align: middle; margin-right: 4px; }
.dot.brl { background: var(--brl); }
.dot.usd { background: var(--usd); }
.grafico { display: flex; align-items: flex-end; gap: 6px; height: 200px; overflow-x: auto; padding-top: 10px; }
.barra-col { display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 34px; flex: 1; height: 100%; justify-content: flex-end; }
.barra { width: 100%; max-width: 40px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; border-radius: 5px 5px 0 0; overflow: hidden; background: var(--bg2); }
.seg { width: 100%; }
.seg.brl { background: linear-gradient(180deg, var(--orange2), var(--orange)); }
.seg.usd { background: linear-gradient(180deg, #4cd989, var(--usd)); }
.barra-label { font-size: 11px; color: var(--muted); }
.vazio { color: var(--muted); text-align: center; padding: 40px; width: 100%; }

/* ---------- Tabela ---------- */
.tabela-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--muted); font-weight: 500; padding: 10px; border-bottom: 1px solid var(--border); font-size: 12px; text-transform: uppercase; }
td { padding: 12px 10px; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
.right { text-align: right; }
.tag { padding: 2px 8px; border-radius: 6px; font-size: 12px; font-weight: 700; }
.tag.brl { background: rgba(255,106,0,.15); color: var(--orange); }
.tag.usd { background: rgba(46,204,113,.15); color: var(--usd); }

@media (max-width: 720px) {
  .cards, .split { grid-template-columns: 1fr; }
  .custom { margin-left: 0; width: 100%; flex-wrap: wrap; }
}